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Finding the Third Proportional to 218,143.13 and 471,313.69

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Solution

The third proportional to 218,143.13 and 471,313.69 is: 1,018,306.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,143.13 : 471,313.69 = 471,313.69 : x
  2. Step 2: Convert to fraction form
    218,143.13/471,313.69 = 471,313.69/x
  3. Step 3: Cross multiply
    218,143.13x = 471,313.69 × 471,313.69
  4. Step 4: Simplify right side
    218,143.13x = 222,136,592,024.85
  5. Step 5: Solve for x
    x = 222,136,592,024.85/218,143.13
  6. Step 6: Final answer
    x = 1,018,306.64

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.